Gas Barrier, Thermal, Mechanical and Rheological Properties of Highly Aligned Graphene-LDPE Nanocomposites

This contribution reports on properties of low-density polyethylene-based composites filled with different amounts of graphene nanoplatelets. The studied samples were prepared in the form of films by means of the precoating technique and single screw melt-extrusion, which yields a highly ordered arrangement of graphene flakes and results in a strong anisotropy of composites morphology. The performed tests of gas permeability reveal a drastic decrease of this property with increasing filler content. A clear correlation is found between permeability and free volume fraction in the material, the latter evaluated by means of positron annihilation spectroscopy. A strong anisotropy of the thermal conductivity is also achieved and the thermal conductivity along the extrusion direction for samples filled with 7.5 wt % of GnP (graphene nanoplatelets) reached 2.2 W/m·K. At the same time, when measured through a plane, a slight decrease of thermal conductivity is found. The use of GnP filler leads also to improvements of mechanical properties. The increase of Young’s modulus and tensile strength are reached as the composites become more brittle.

[1]  Jianjun Guo,et al.  Thermal and mechanical properties of polyamide 12/graphene nanoplatelets nanocomposites and parts fabricated by fused deposition modeling , 2017 .

[2]  M. Wilhelm,et al.  Linear and Nonlinear Rheology Combined with Dielectric Spectroscopy of Hybrid Polymer Nanocomposites for Semiconductive Applications , 2017, Nanomaterials.

[3]  S. Gubanski,et al.  Electrical, Mechanical, and Thermal Properties of LDPE Graphene Nanoplatelets Composites Produced by Means of Melt Extrusion Process , 2017, Polymers.

[4]  S. Gubanski,et al.  Novel electrical properties of extruded LDPE-GnP filled nanocomposites , 2016 .

[5]  Micah J. Green,et al.  Challenges in Liquid‐Phase Exfoliation, Processing, and Assembly of Pristine Graphene , 2016, Advanced materials.

[6]  J. Kenny,et al.  Relationship between morphology and electrical properties in PP/MWCNT composites: Processing-induced anisotropic percolation threshold , 2016 .

[7]  Suwarno,et al.  Dielectricproperties of graphene nanoplatelets filled LDPE , 2016, 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE).

[8]  H. Münstedt,et al.  Is electrical percolation in carbon-filled polymers reflected by rheological properties? , 2016 .

[9]  V. Bertolino,et al.  Effect of the Biopolymer Charge and the Nanoclay Morphology on Nanocomposite Materials , 2016 .

[10]  D. Bieliński,et al.  Influence of Network Structure on Glass Transition Temperature of Elastomers , 2016, Materials.

[11]  J. Valverde,et al.  Solvent-Based Exfoliation via Sonication of Graphitic Materials for Graphene Manufacture , 2016 .

[12]  Roland Kádár,et al.  Tailoring polymer nanocomposite microstructure by controlling orientation, dispersion and exfoliation of GnP in LDPE via extrusion flow , 2016 .

[13]  S. Kundalwal,et al.  Gas Barrier Performance of Graphene/Polymer Nanocomposites , 2015, 1509.06256.

[14]  Yanbin Cui,et al.  Gas barrier properties of polymer/clay nanocomposites , 2015 .

[15]  Min Yi,et al.  A review on mechanical exfoliation for the scalable production of graphene , 2015 .

[16]  N. Hu,et al.  Enhanced interfacial thermal transport across graphene–polymer interfaces by grafting polymer chains , 2015 .

[17]  C. Kapusta,et al.  Magnetic-aligned, magnetite-filled epoxy composites with enhanced thermal conductivity , 2015, Journal of Materials Science.

[18]  J. Owens,et al.  ALTERNATIVE GAS INSULATION IN MEDIUM-VOLTAGE SWITCHGEAR , 2015 .

[19]  G. Zhong,et al.  Ultra-low gas permeability and efficient reinforcement of cellulose nanocomposite films by well-aligned graphene oxide nanosheets , 2014 .

[20]  M. Wilhelm,et al.  New way to characterize the percolation threshold of polyethylene and carbon nanotube polymer composites using Fourier transform (FT) rheology , 2014, Korea-Australia Rheology Journal.

[21]  L. Nicolais,et al.  Gas transport through nanocomposite membrane composed by polyethylene with dispersed graphite nanoplatelets , 2014 .

[22]  Juin-Yih Lai,et al.  Enhancing polymer/graphene oxide gas barrier film properties by introducing new crystals , 2014 .

[23]  M. Hasik,et al.  Various types of polysiloxanes studied by positron annihilation lifetime spectroscopy , 2014 .

[24]  Haiyan Yan,et al.  Enhanced thermal conductivity in polymer composites with aligned graphene nanosheets , 2014, Journal of Materials Science.

[25]  S. Sahoo,et al.  Graphene and modified graphene-based polymer nanocomposites – A review , 2014 .

[26]  H. Park,et al.  Graphene and graphene oxide and their uses in barrier polymers , 2014 .

[27]  B. C. Ng,et al.  Directional alignment of carbon nanotubes in polymer matrices: Contemporary approaches and future advances , 2014 .

[28]  P. Cassagnau.  Linear viscoelasticity and dynamics of suspensions and molten polymers filled with nanoparticles of different aspect ratios , 2013 .

[29]  F. Tang,et al.  Flatness-dependent thermal conductivity of graphene-based composites , 2013 .

[30]  H. T. Lim,et al.  Nonlinear viscoelasticity of polymer nanocomposites under large amplitude oscillatory shear flow , 2013 .

[31]  T. Das,et al.  Graphene-Based Polymer Composites and Their Applications , 2013 .

[32]  Bon-Cheol Ku,et al.  In situ synthesis of the reduced graphene oxide–polyethyleneimine composite and its gas barrier properties , 2013 .

[33]  L. Nicolais,et al.  Mechanical properties of low-density polyethylene filled by graphite nanoplatelets , 2012, Nanotechnology.

[34]  A. Durmuş,et al.  Rheological behavior of cycloolefin copolymer/graphite composites , 2012 .

[35]  Michael S Strano,et al.  Mechanisms of gas permeation through single layer graphene membranes. , 2012, Langmuir : the ACS journal of surfaces and colloids.

[36]  C. Jia,et al.  Effective thermal conductivity of graphene-based composites , 2012 .

[37]  A. Balandin,et al.  Thermal properties of graphene and multilayer graphene: Applications in thermal interface materials , 2012 .

[38]  Xian Jiang,et al.  Reduction in percolation threshold of injection molded high‐density polyethylene/exfoliated graphene nanoplatelets composites by solid state ball milling and solid state shear pulverization , 2012 .

[39]  Gareth H. McKinley,et al.  A review of nonlinear oscillatory shear tests: Analysis and application of large amplitude oscillatory shear (LAOS) , 2011 .

[40]  S. Cimmino,et al.  Food packaging based on polymer nanomaterials , 2011 .

[41]  G. Cavallaro,et al.  Films of Halloysite Nanotubes Sandwiched between Two Layers of Biopolymer: From the Morphology to the Dielectric, Thermal, Transparency, and Wettability Properties , 2011 .

[42]  Makoto Kato,et al.  Development and applications of polyolefin– and rubber–clay nanocomposites , 2011 .

[43]  C. Macosko,et al.  Graphene/polyethylene nanocomposites: Effect of polyethylene functionalization and blending methods , 2011 .

[44]  M. Hersam,et al.  Highly concentrated graphene solutions via polymer enhanced solvent exfoliation and iterative solvent exchange. , 2010, Journal of the American Chemical Society.

[45]  S. Bose,et al.  Recent advances in graphene based polymer composites , 2010 .

[46]  G. Choudalakis,et al.  Permeability of polymer/clay nanocomposites: A review , 2009 .

[47]  Lawrence T. Drzal,et al.  A new compounding method for exfoliated graphite–polypropylene nanocomposites with enhanced flexural properties and lower percolation threshold , 2007 .

[48]  L. Drzal,et al.  Multifunctional polypropylene composites produced by incorporation of exfoliated graphite nanoplatelets , 2007 .

[49]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

[50]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[51]  Y. M. Shkel,et al.  Polymeric Composites Tailored by Electric Field , 2004 .

[52]  D. Bieliński,et al.  Differences between crystallization of LDPE and iPP in EPDM matrix , 2000 .

[53]  Robert H. Olley,et al.  Refinement of etching techniques to reveal lamellar profiles in polyethylene banded spherulites , 1999 .

[54]  C. Macosko,et al.  Effect of reinforcing fillers on the rheology of polymer melts , 1992 .

[55]  S. Gustafsson.  Transient plane source techniques for thermal conductivity and thermal diffusivity measurements of solid materials , 1991 .

[56]  M. Sahota,et al.  Thermal conductivity of extruded polyethylene , 1978 .